Hot-top for ingot-molds



J. JONES.

HOT TOP FOR INGOT MOLDS. APPLICATION Fl!.ED SEPT. a. (919.

1,334,036. Patented Mar. 16,1920.

2 SHEETS-SHEET l.

lZ/iiness es Inventor J07? Ofles, 4 fi hisfitta r zfgy J. JONES.

HOT TOP FOR INGOT MOLDS.

APPLICATION FILED SEPT. 22, 1919.

I Patented Mar. 16, 1920.v

lflz'zzzesses I Inventor" Joh nJon es,

UNITED STATES PATENT OFFICE.

JOHN ions, or PHILADELPHIA, PENNSYLVANIA.

HOT-TOP non rNco'r-iuonns.

Specification of Letters Patent.

Application filed September 8, 1919. Serial No. 322,399.

To all whom it may concern: Be it known that I, JOHN J ONES, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Hot Tops for Ingot-Molds, of which the following is a specification.

One ob]ect of my invention is to provide an improved hot top which-can be easily and quickly placed upon an ingot mold so as to keep a portion of the poured metal in a liquid state until the other portion of the cured metal, which forms the ingot proper, lias solidified.

Another object of my invention is to provide a hot top of the above character which will move toward the mold during the,

shrinkage of ,an ingot poured therein and in so doing will prevent cracking and other imperfections of the ingot.

A further object is to so form my 1m- 7 proved hot top that it can be easily made up and will be extremely'durable.

These objects, and other advantageous ends which will be described hereinafter, I

attain in the following manner, reference bein had to the accompanying drawings in whic Figure 1 is a sectional elevation showlng my improved hot top in connection with an ingot mold and occupying a pos1t1on ready for pouring,

' proved hot top Fig. 2 is a sectional plan view taken on the line 22 of Fig. 1, 0

Fig. 3 is an outside elevation of my 1mlooking in the direction of the arrow 00 0 Fig. 1, a portion of the bottom of the mold being broken off, i

Fig. 4 is a fragmentary perspective new of one of the wedges shown in Figs. 1, 2

and 3,

Fig. 5 is a fragmentary perspective 'view of a part of my invention, 5

Fig. 6 is a sectional elevation ShOWlllg a modified form of my invention,

Fig. 7 is a fragmentary elevation, partly in section, showing the form of my invention shown in Fig. 6,

Fig. Sis a perspective view of a wedge and slot connection of the form of my invention shown in Figs. 6 and 7, and

9 is a sectional elevation showing not er modification of my invention;

Referring to Figs. 1 to 5 inclusive of the- Patented Mar. 16, 1920.

The lining 15 is preferably parted as shown at 20 at the parting between the rings.

13 and 14 so that-a man'can easil reach downwardly through the pouring hole 16 under the flange 17 to insert the calking or packing 19.

I he ring 14 is provided withlugs 21 whlch are spaced at intervals around the outer surfaceof the ring, as clearly shown in Fig. 2 and these lugs have tapered inner surfaces 22 to permit wedges 23 to be in-' serted between said surfaces 22 and the top surface 2 1 of the ingot 10, as clearly shown in Figs. 1, 2 and 3. These wedges 23 normally hold the bottom surface 25 of the 14 in spaced relation above the top surface 24 of the ingot 10'and also hold the flange 17 at a normally fixed or-predetermined position within the cavity 1 8 of the mold 10.

Rods 26 extend through the flanges of the rings 13 and 14 and into holes 27 in the top portion of. the mold 10. These rods are preferably used to keep the flange 17 centralized withinthe cavity 18, and the packing or calking 19 the cavity 18 and t flange 17.. I I

In the use of my, invention the molten metal is poured into the cavity 18 throu h the pour hole 16a greater quantity of the metal being poured than is necessary-to fill e outer portion of the the cavity 18 so thata portion of the molten. metal fills or partially fills the pour hole 11. Anyimpurities or 16 of the hot top foreignmaterial 1n the metal will rise to the top and this.;inferior portion of the metal will be located within the upper portion of the molten metal-adjacent the upper portion of the hot top. When themetal' within the ingot cavity 18 begins to cool, it will rovides a seal between gradually shrink and in so doing can draw from the molten metal within the hot top,

, After the metal starts to shrink and turn into solid form, the wedges 23 can be knocked slowly out from under the lugs 21 and after a time these wedges can be entirely removed. This permits the shrinkage of the metal within the cavity 18 to pull or permit the hot top 11 to move-toward the mold 10 so that the'flange portion 17 will continue to move into the cavity 18 during the natural shrinkage of the ingot metal. By thus allowing the natural shrinkage, cracks or other imperfections of the ingot are prevented and practically a perfect ingot is produced. After the cooling, the portion of the metal within the hottop can be detached from. the ingot and the ingot will be free of cracks or pipes.

In the form of my invention shown in Figs. 6, 7 and 8 instead of using the wedges as above described, rods 28 may be em ployed, said rods extending through the flanges of the rings 13 and 14 of the hot top, said rods having slots 29 through which wedges- 30 are driven, said wedges being positioned directly under the upper flange 31 of the ring 13'. The rods 28 set within holes 32 in the ingot mold 10 and thus serve to hold the hot top in spaced relation be tween the bottom of the ring 14 and the top surface of the mold 10. WVhen it is desired to permit the hot top to move toward the ingot, the wedges 30 can be driven out of the slots 29 and thus permit the flange 17 of the hot top to move into the cavity 18 of the mold 10. It will be noted that in this construction the rods 28 also serve as centering means for the flange 17 within the cavity 18 and it is unnecessary to employ additional rods, similar to the rods 26 above described, in this form of my invention.

In the form of my invention shown in Fig. 9, I have shown screw or bolt rods 33 extending through the flanges of the rings of the hot top; the lower flanges 34 having screw threaded holes through which the! screw threaded portions of the rods 33 extend so that by turning the rods-33 the hot top will be permitted to move toward the mold in the same manner as described in connection with the foregoing constructions.

While I have described my invention as taking a particular form, it will be understood that the various parts of my invention may be changed without departing from the spirit thereof, and hence I do not limit myself to the precise construction set forth,

but consider that I am at liberty to make such changes and alterations as fairly come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. The combination of an ingot mold, a hot top for said mold and including a pouring hole communicating with the interior of the mold whereby the molten metal can be poured into said mold through the pouring hole and so that a portion of the molten metal can remain in the pouring hole; and means for holding said hot top to normally prevent the latter from moving toward the ingot mold, said latter means including a part movable, to permit the hot top to gradually move toward the mold during the shrinking of the metal while in a molten state, said part also serving to prevent the hot top from falling unchecked toward said mold; substantially as described.

2. The combination of an ingot mold; a hot top for said mold and including apouring hole communicating with the interior of the mold whereby the molten metal can be poured into said mold through the pouring hole and so that a portion of the molten metal can remain in the pouring hole; and means for holding said hot top to normally prevent the latter from moving toward the ingot mold, said latter means including a part movable to permit the hot top to gradually move toward the mold during the shrinking of the metal while in a molten state, said part also serving to prevent the hot top from falling unchecked toward said I mold, said part being operative after the molten metal solidifies to completely release said hot top and permit it to move toward ing hole communicating with the interior of the mold whereby the molten metal can be poured into said mold through the pouring hole and so that a portion of the molten metal can remain in the pouring hole; and means for holding said hot top to normally prevent the latter from moving toward the ingot mold, said latter means including a part movable to permit the hot top to gradually'move toward the mold during the shrinking of the metal while in a molten state, said part also serving to prevent the hot top from falling unchecked toward said mold, said part being operative after the molten metal solidifies to completely release said hot top and permit it to move toward said mold during the shrinking of the ingot after the metalhas solidified, said mold being made of a material which is a better conductor of heat than the material of the In testimony whereof I have signed my portion of the hot top which includes the name to this specification in the presence of pouring hole whereby the metal within said two subscribing Witnesses.

pouring hole will remain in a liquid state JOHN JONES. fora greater time than the metal which, is Witnesses: I v poured into said mold; substantially as de- EVELYN CRoMP'roN,

scribed. v CHAS. E. Po'rrs. 

